Just tried the voice search, and just like the text search it is next to useless, as it seems to miss most, if not all of the key UK services
The only thing Roku has going for it in the UK, is that it covers all of the catch up services, and all of the main IPTV services.
If Amazons fire TV had Now TV, and Youtube ( officially ) then Roku would be dead in the water.
Did you try new Roku version 2 and 3, that version made only for voice search with remote. And it's amazing features.